One of the most famous and prolific inventors of all time, Thomas Alva Edison exerted a tremendous influence on modern life, contributing inventions such as the incandescent light bulb, the phonograph, and the motion picture camera, as well as improving the telegraph and telephone.
Edison's most important invention is the light bulb. He had experimented more than 1600 times with heat-resistant materials and over 600 kinds of plant fibre before he made the first light bulb.
